Panicum capillare L., 1753 39% complete

Old-witch grass

Sp. pl. 1:58. 1753

Data sources

Each value Trefle shows for Panicum capillare, with what every source says about it. When sources disagree, the strongest source is shown (how sources are ranked). Values imported before sources were recorded one by one are marked Source not recorded.

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Sourced12 Differs from sources3 Source not recorded9 Not on the record6 Sources: TRY Plant Trait Database, Earlier Trefle data
Field Shown What the sources say
Core
Author L. No source recorded
Source not recorded
Bibliography Sp. pl. 1:58. 1753 No source recorded
Source not recorded
Phylum Tracheophyta No source recorded
Source not recorded
Rank species No source recorded
Source not recorded
Status accepted No source recorded
Source not recorded
Year 1753 No source recorded
Source not recorded
Descriptive
Common name Old-witch grass No source recorded
Source not recorded
Observations Canada to NE. Mexico, Caribbean No source recorded
Source not recorded
Morphology
Average height 45 cm
  • 45.3 cm · TRY Plant Trait Database · Measured · 44 observations · 2026-10-09
    TRY 7.0 datasets 28, 50, 66, 164, 335, 419, 500, 853, 882, 918
Differs from sources
Biological type therophyte Sourced
Foliage texture empty Not on the record
Fruit shape caryopsis Sourced
Growth habit Graminoid
  • Graminoid · Earlier Trefle data · Reported · 2026-10-19
    value present before provenance tracking (2022 import), no source recorded
Sourced
Maximum height 95 cm
  • 95 cm · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09
    TRY 7.0 datasets 28, 50, 66, 164, 335, 419, 500, 853, 882, 918
Sourced
Sexuality empty Not on the record
Vegetable false No source recorded
Source not recorded
Phenology
Bloom months jul Sourced
Duration annual
  • annual · TRY Plant Trait Database · Measured · 21 observations · 2026-10-09
    TRY 7.0 datasets 4, 25, 28, 71, 110, 164, 460, 818, 882, 918
Sourced
Ecology
Atmospheric humidity 3 / 9 · rather dry air
  • 3 / 9 · rather dry air · Earlier Trefle data · Reported · 2026-10-19
    value present before provenance tracking (2022 import), no source recorded
Sourced
Ground humidity empty
  • 4 / 12 · moderately dry (meso-xerophilous) · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09
    TRY 7.0 datasets 489
Not on the record
Light 9 / 9 · full sun Differs from sources
Nitrogen fixation None
  • None · TRY Plant Trait Database · Measured · 7 observations · 2026-10-09
    TRY 7.0 datasets 20, 57, 71, 110, 444, 445
Sourced
Ph maximum pH 8
  • pH 8 · Earlier Trefle data · Inferred · 2026-10-19
    value present before provenance tracking (2022 import), no source recorded derived from a Baseflor soil reaction class by the 2022 import, a class not a measurement
Sourced
Ph minimum pH 7.5
  • pH 7.5 · Earlier Trefle data · Inferred · 2026-10-19
    value present before provenance tracking (2022 import), no source recorded derived from a Baseflor soil reaction class by the 2022 import, a class not a measurement
Sourced
Soil nutriments 7 / 9 · rich (eutrophic)
  • 6 / 9 · rather rich (meso-eutrophic) · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09
    TRY 7.0 datasets 489
Differs from sources
Soil salinity 0 / 9 · absent from saline soils
  • 0 / 9 · absent from saline soils · TRY Plant Trait Database · Measured · 3 observations · 2026-10-09
    TRY 7.0 datasets 489
Sourced
Cultivation
Minimum root depth 39 cm Sourced
Usda legacy
C n ratio empty Not on the record
Other
Soil ph indicator — Not on the record
Temperature indicator — Not on the record